C H A P T E R
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Hardware Installation Guide for the Cisco 4451-X Integrated Services Router
OL-27644-01
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Overview of the Cisco 4451-X Integrated Services
Router
About the Cisco ISR 4451-X
The Cisco 4451-X Integrated Services Router (ISR) is a modular router with LAN and WAN
connectivity and supports several interface modules, including Cisco Service Modules (SMs), or
Enhanced Service Modules (SM-X), and Network Interface Modules (NIMs). The router has slots that
support the interface modules and modular Solid State Drives (SSDs).
The Cisco ISR 4451-Xs target the following applications:
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Enterprise applications—Intended as the mid-size aggregation and gateway router typically residing
in a regional or large branch office:
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WAN aggregation at Cisco Enterprise core
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Internet gateway
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Branch or regional office aggregation
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Remote access aggregation
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Service provider applications—Intended for high-end Enterprise Branch environments.:
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High-end customer premises equipment (CPE) for business-quality Internet access
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Service provider leased line aggregation
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Provider edge (PE) and high-end customer edge (CE) for Layer 2 VPN or Layer 3 VPN services
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Broadband aggregation—PPPoE/PPPoA aggregation and Service Selection Gateway (SSG)
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Low-end Ethernet aggregation
The Cisco ISR 4451-Xs provide the following capabilities:
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Two single-wide SM slots that may be combined into one double wide SM slot.
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Three single-wide NIM slots that may combined into one double wide (NIM1 and NIM2) and one
single wide NIM slot (NIM3). The slots can also support a modular or optional SSD.
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NIM3 slot also functions as a special hard drive carrier slot.
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1 10/100/1000 RJ-45 Ethernet port for system managements (labeled "GE 0" with “MGMT” on the
left of the connector)
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2 USB 2 Type A host ports
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1 USB mini-TypeB Console (placed next to the RJ45 Console port)
